Pulp-screen.



, PATENTED OCT. 16, 1906.

0. H. MOORE. PULP SCREEN.

APPLIIOATION FILED MAR.10,1906.

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0. H. MOORE. PULP SCREEN. APPLICATION rum) MAR.10,19 06.

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No. 833,617. PATENTED OCT. 16, 1906. 0. H. MOORE.

PULP SCREEN.

I APPLICATION FILED MAR. 10,1906.

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UNITED STATES PATENT OFFICE ORVILLE H. MOORE, OF FORT EDWARD. NEW YORK.

PULP-SCREEN.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application m d March 10,1906. Serial No. 305.372.

.new and useful Improvements in Pulp- Screens; and I do hereby declare the following to be a full, clear, and exact description make and use the same.

of the invention, such as will enable others skilled in the art to which it appertains to My invention relates to improvements in t has for its object simplicity and ease of construction and "the provision of a screen so constructed that the stock will always be evenly distributed to the screen-plates.

It has for its further object to" prevent the sliver from becoming mixed with refined pulp and the material from oozing out at the bearings.

In the accompanying drawings, illustrating the preferred embodiment of my invention, Figure 1 is a side elevation of one-form of my screen. Fig. 2 is a vertical sectional view taken longitudinally and centrally of Fig. 1. Fig. 3 is an end elevation of the screen shown in Fig. 1. Fig. 4 ;is a cross-sectional view taken on the line m as of Fig. 2, and Fig. 5 is acentral longitudinal sectional view of a modified form of screen.

Referring more particularly to the drawings, and first to Figs. 1, 2, 3, and 4, the horizontal main-shaft l is mounted in bearings 2 in suitable supports 3, which also support the casing 4, surrounding the screen 5, which is preferably cylindric. Said shaft com-V,

prises a hollow portion 1, extending from the pulp-inlet 6 through to near the opposite end of the screen, and a solid portion 1", con-- nected to the inner end of the hollow portion and extending out into the bearings at the other end of the machine. Mounted on the part of the hollow shaft within the screen are lades 7, constituting a fan which is adapted to be revolved with said shaft to force the material through the screen. The outer end of the hollow shaft registers with the pulpinlet pipe 8, and the body of said hollow shaft is provided with openings 9, arranged between the blades of the fan, through which the pulp is fed and distributed, by means of the fan-blades, evenly over the screen. As

the openings 9 are arranged all around the shaft, the material is fed not only downward, but in all directions at the same time as said the convex sides of the blades, thereby greatly facilitating the work of the machine and increasing its capacity.

The screen is formed of heads or end plates 5 5 the outer circumferences of which are provided with flanges 5, to which are secured the strainer-plates 5 which may be provided with either round holesor slots, ae-

cording to the stock to be made. The end plate 5*, nearer the inlet, has a sleeve-bearing 5 around the hollow portion of the. shaft, said sleeve being provided with a packinggland 5 at its end to prevent the stock from escaping. The end plate 5 has a longer sleeve-bearin 5 around the solid'portion of the shaft, an; a packin gland 5 is placed at the end of this sleeve-Tearing for the same purpose. Said end plate 5 has a series of slots 5 around its outer edge, through which the sliver escapes to its outlet. The extreme outer edge of said endplate has a double flange. 5 between which a projecting rim or flangef5 on the casing extends, whereby the sliver and sawdust is prevented from getting into the space between the-screen-cylinder .and the casing where the good stock is con- The outer'casing is of a general cy lindrical form and'has ulp and sliver outletslO and 11', resgsective y, in its bottom or lower portion. he openings in said casing, through which the sleeve-bearings of the end plates of the screen extend, have suitable bearings at 12 and 13. A third packing-gland 14 is used at the right-hand end of the casing; but one packing-gland suflices at the left hand end of the sleeve-bearing on the end plate of the screen and the o ening in the casing for the passage of the ho low shaft. A pipe 15 is arranged in the'upper part of the casing just above the screen, upon which it directs a shower to wash the screen-plates as they pass. An opening 16 is provided in'the top of the casing to be used as an air-ventand to inspect the machine to see that it is working perfectly at all times.

The outer end of the hollow portion of the shaft is flared, as at 17, to receive the end of the stationary inlet-pipe 8 This joint is also provided with a packing-gland 18. The shaft and fan are revolved by means of a belt-pulley 19 ,mounted on the solid portion near its end. An auxiliary shaft hung beings "24 therein, an a solid portion 25. Said shaft is mounted in bearings 26in supports 27, which also support the casing 28. The

hollow shaft registers with the inlet-pipe 29' the same as in the other construction. The

' fan-blades 30 are secured to the hollow shaft in the'same relation to the openings therein as in the form of screen shown 1n Fig. 2. In the present construction, however, I do away with one of the end plates for the screen 31 and use only the right-hand end plate 32, which has its bearing around the s aft provided with a packing-gland 33. Said end plate has an annular flange 34 pro'ecting therefrom and bearing in the end of t e casing at 35, said bearing having a packing-ring 36. The interior of said flange is provided with gear-teeth 37, which are engaged by a gear 38 on an auxiliary shaft 39,- also carrying another gear 40, meshing with a gear 41 on the main Shaft, wherebysaid screen is revolved when the main shaft is rotated by means of the belt-pulley 42. The other end of said screen has anoutWardly-extending flange 43, angular in cross-section, bearing in an annular projecting flange 44 in the casing.

The outer ed e of this end of the screen has two outward y-extending flanges 46 fitting around a single flange 47 on the casing to prevent the coarse material which passes out through slots 48 in the flange 43 to the outlet .49 from getting into the compartment 50 of the casing, where the good pulp which'has passed through the screen is confined. Said casing is provided with an outlet 51 for the screened material, an opening 5 2 in the top for inspecting the machine, and a water-pipe 53 for furnishing the shower, all substantially as in the other construction. Other packing-glands 54 and 55 are provided, as shown, at proper points to prevent leakage. It will be noted that this construction is simpler than the other and takes up less floorspace. It also saves labor and produces better stock.

I claim 1. A machine of the character described, the combination with a horizontal revoluble hollow shaft carrying fan-blades and having openings therein between said blades, of a screen inclosing said fan, and means to feed material to said hollow shaft.

2. In a machine of the character described,

the combination with a horizontal revoluble hollow shaft carrying fan-blades and having openings therein between said blades, of a screen inclosing said fan, and an inlet-pipe registering with the endof the hollow shaft and adapted to feed material thereto.

3. In a machine of the character described, the combination with a revoluble hollow shaft carrying fan blades and having openings therein betweensaid blades, of a screen in closing said fan, a pipe arranged above said screen and adapted'to direct a shower thereon, and means to feed material to said hollow shaft.

4. In a machine of the character described, the combination with a horizontal revoluble shaft comprising "a hollow portion and a solid portion, blades mounted on said hollow ortion, the latter being provided with openings between said blades, a screen inclosing said "fan, and means to feed material to the hollow portion of said shaft.

5. In a machine of the character described, the combination with a horizontal revoluble shaft com rising a hollow portion and a sol d portlon, o fan-blades mounted on said hollow portion, the latter being provided with openings between said blades, a screen inclosing said fan, and an inlet-pipe registering with the end of the hollow portion of. said shaft and adapted to feed material thereto.

6. In a machine of the character described, the combination with a shaft comprising a hollow portion and a solid portion, of fan-blades mounted on said hollow portion, the latter being provided with openings therein between said blades, a screen inclosing said fan,

means on the solid portion of the shaft for rotating the same, and means to feed the material to said hollow ortion of said shaft.

7. In a machine 0 the character described, a revoluble screen, a fan adapted to be revolved in the same direction but at a different speed from said screen, a casing, inclosing said screen, provided with separate com artments for the refined material and the s iver, said compartments being. separated from each other by a double flange on the screen adapted to move in juxtaposition to the opposite sides of a single flange on the casing.

8. In a machine of the character described,

the combination with a revoluble shaft com prising a hollow portion and a solid portion, fan-blades mounted on said hollow portion, the latter having openings between said blades, an independently-revoluble screen inclosing said fan, a casing inclosing the screen, said screen having a supporting-disk at one end bearin on the solid portion of the shaft, an inward y-extcnding flange arranged on the other end of the screen and bearing on a pro'ection from the casing, and means to fieftmaterial to the hollow portion of the s a 9. In a machine of the character described,

blades, an independently revoluble screen said blades, of arevoluble'screen inclosing the combination with a revoluble shaft comprising a hollow portion and a solid portion, an-blades mounted on said hollow portion, the latter having openings between said inclosing said fan, ,a casing inclosing the screen, said screen having a supporting-disk at one end providedwith an extending flange having bearin s in the casing and provided with'gear-teet on its interior surface, and a system of gearing between the shaft and said toothed flange for rotating the screen. 10. In a machine of the character described, the combination with a revoluble shaftcomprising a hollow portion and a solid portion, fan-blades mounted on said hollow portion, the latter having openingsbetween said fan, a casing inclosing the screen, said screen having an inwardly-extending flange on one end bearing on a flange on the casing, said flange on the screen having slots for the escape of the sliver, and means to feed material to the hollow portion of the shaft.

11. In a machine of the character described, the combination with a revoluble shaft comprising a hollow portion anda solid portion, fan-blades mounted onsaid hollow portion, the latter havin openings between said blades, of a revolu le screen inclosing said fan, a casing inclosing the screen, said screen having an inwardly-extending flange on one end bearing a flange on the casin said flange on the screen having slots for t e escape of the sliver, said screen having an outwardly-extending double flange embracing a single flange on the casing thereby separating the compartment for the screened stock from that for the sliver, the inwardly-extending flange on the screen having'slots for the escape of thesliver, and means to feed material to the hollow portion of the shaft.

12. In a machine of the character described, the combination with a revoluble shaft comprising a hollow portion and a solid portion, fan-blades mounted on said hollow portion, the latter having openings between said blades, anw inde endently revoluble screen inclosin said fin, a casing inclosing the screen, sai screen having a supportingdisk at one end provided with an extending flange having bearings in the casing and rovided with ear-teeth on its interior s ace,

' a gear-whee on the solid portion of said shaft,

an auxiliary shaft carrying gears meshing with said toothed flange and said gear, and means for rotating the main shaft.

In testimony whereof I aflix my signature in presence'of two witnesses.-

ORVILLE H. MOORE.

Witnesses:

. J. WALTER MOORE,

R. VAN DERWERKER. 

